*{
    margin: 0px;
    padding: 0px;
}
.cont{
    background-image: url(../images/back.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    overflow: hidden;
    width: 100%;
    height: 100vh;
}
h2{
    text-align: center;
    color: white;
    margin-top: 32px;
    margin-bottom: 48px;
    font-size: 27px;
}
.box{
    background-color: rgba(255, 255, 255, 0.699);
    border-radius: 14px;
    width: 220px;
    height: 322px;
    margin: 0px auto;
    padding: 40px;
}
.img_box{
    text-align: center;
}
img{
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 25px;
}
input{
    width: 210px;
    height: 16px;
    padding: 5px;
    border-radius: 5px;
    border:1px solid #a9a9a9;
    margin-bottom: 20px;
    text-indent: 25px;
    /* 首行缩进 */
}
.input_text{
    background-image: url(../images/user.png);
    background-repeat: no-repeat;
    background-position-y: center;
    background-position-x: 7px;
}
.input_pass{
    background-image: url(../images/lock.png);
    background-repeat: no-repeat;
    background-position-y: center;
    background-position-x: 7px;
}
button{
    width: 220px;
    height: 31px;
    border: 0px;
    color: white;
    line-height: 31px;
    margin-bottom: 20px;
    border-radius: 5px;
    font-size: 13px;
}
.button_sub{
    background-color: #9acd32;
}
.button_res{
    background-color: #dc143c;
}
a{
    float: right;
    font-size: 11px;
    color: #333333;
    font-weight: bold;
}